<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1065766
-->
<head>
  <meta charset="utf-8">
  <title>Test for Bug 1065766</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1065766">Mozilla Bug 1065766</a>
<div id="content" style="display: none">
  <video id="myVideo"></video>
</div>
<pre id="test">
<script type="application/javascript">
"use strict";

/**
 * Test for Bug 1065766
 *
 * This test verifies that <video> has 'object-fit:contain' by default, set via
 * a UA stylesheet. (This is different from the property's initial value, which
 * is "fill".)
 *
 * Spec reference:
 * https://html.spec.whatwg.org/multipage/rendering.html#video-object-fit
 */

function checkStyle(elem, expectedVal, message) {
  is(window.getComputedStyle(elem, "").objectFit, expectedVal, message);
}

function main() {
  const videoElem = document.getElementById("myVideo");

  checkStyle(videoElem, "contain",
             "<video> should have 'object-fit:contain' by default");

  // Make sure we can override this behavior (i.e. that the UA stylesheet
  // doesn't use "!important" to make this style mandatory):
  videoElem.style.objectFit = "cover";
  checkStyle(videoElem, "cover",
             "<video> should honor 'object-fit:cover' in inline style");
}

main();
</script>
</pre>
</body>
</html>
